Examples of org.sonatype.nexus.proxy.item.StorageLinkItem

org.sonatype.nexus.proxy.item.StorageLinkItem
An item that is a link (idea very similar to Linux symlink). It points to some other content (generated or not) in any repository within this Nexus instance (even cross repository). It cannot point to target not in repository (like virtual items). Link itself might be virtual. The path where target UID points might not exists (link is still valid but stale, as dereferencing it will result simply in {@link ItemNotFoundException}), but if the link target UID points to a non existing {@link Repository}, link will be automatically removed by Nexus on retrieving the link itself and {@link ItemNotFoundException} will be thrown.
For dereferencing links recommended method is {@link RepositoryRouter#dereferenceLink(StorageLinkItem)}.

        try {
          result = doRetrieveItemFromMaster(request);


          // try to create link on the fly
          try {
            StorageLinkItem link = createLink(result);


            if (link != null) {
              return link;
            }
            else {

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        new DefaultStorageFileItem(repository, fileRequest, true, true, new StringContentLocator(
            "This is a file."));
    repository.storeItem(false, fileItem);
    // a link
    final ResourceStoreRequest linkRequest = new ResourceStoreRequest("/linkItem.txt");
    final StorageLinkItem linkItem =
        new DefaultStorageLinkItem(repository, linkRequest, true, true, fileItem.getRepositoryItemUid());
    repository.storeItem(false, linkItem);
    // a composite
    final ResourceStoreRequest compositeRequest = new ResourceStoreRequest("/compositeItem.txt");
    final StorageCompositeFileItem compositeItem =

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    final ResourceStoreRequest rsr = getResourceStoreRequest(request);
    try {
      try {
        StorageItem item = repositoryRouter.retrieveItem(rsr);
        if (item instanceof StorageLinkItem) {
          final StorageLinkItem link = (StorageLinkItem) item;
          if (DEREFERENCE_LINKS) {
            item = dereferenceLink(link);
          }
          else {
            webUtils.sendTemporaryRedirect(response, getLinkTargetUrl(link));

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   * dereference is not found, the usual {@link ItemNotFoundException} will be thrown (by the method used to
   * dereference).
   */
  protected StorageItem dereferenceLink(final StorageLinkItem link) throws Exception {
    final List<String> hops = Lists.newArrayList();
    StorageLinkItem currentLink = link;
    while (true) {
      final String hop = currentLink.getRepositoryItemUid().getKey();
      if (!hops.contains(hop)) {
        hops.add(hop);
        final StorageItem item = repositoryRouter.dereferenceLink(currentLink);
        if (!(item instanceof StorageLinkItem)) {
          return item;

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